zeichenschablone for spreizdübel holes in betonbauteilen

摘要

The jig is for checking the position of holes drilled in concrete to take expanding sockets. It is formed by a supporting sheet on which there is printed a basic grid dividing it into a number of squares whose size depends on permissible intervals for different socket sizes, loads etc. In each square there is a first area where a socket can be inserted to carry its maximum load, a second area for a socket carrying reduced load adjacent to the first and a third area where no sockets may be inserted at all.